diff -Nuar a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt	2017-12-08 04:04:46.000000000 +0300
+++ b/CMakeLists.txt	2017-12-16 23:24:11.263302169 +0300
@@ -29,7 +29,7 @@
 set(PIMCOMMON_LIB_VERSION ${PIM_VERSION})
 set(AKONADICONTACT_LIB_VERSION "5.7.0")
 set(LIBKDEPIM_LIB_VERSION "5.7.0")
-set(QT_REQUIRED_VERSION "5.8.0")
+set(QT_REQUIRED_VERSION "5.7.1")
 set(KMIME_LIB_VERSION "5.7.0")
 set(KIMAP_LIB_VERSION "5.7.0")
 set(KCONTACTS_LIB_VERSION "5.7.0")
